Home / 85,934,464.80-128,712,740.40-45,497,709.60

Finding the Fourth Proportional to 85,934,464.80, 128,712,740.40 and 45,497,709.60

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Solution

The fourth proportional to 85,934,464.80, 128,712,740.40 and 45,497,709.60 is: 68,146,521.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,934,464.80 : 128,712,740.40 = 45,497,709.60 : x
  2. Step 2: Convert to fraction form
    85,934,464.80/128,712,740.40 = 45,497,709.60/x
  3. Step 3: Cross multiply
    85,934,464.80x = 128,712,740.40 × 45,497,709.60
  4. Step 4: Simplify right side
    85,934,464.80x = 5,856,134,884,539,388
  5. Step 5: Solve for x
    x = 5,856,134,884,539,388/85,934,464.80
  6. Step 6: Final answer
    x = 68,146,521.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.